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Posted to commits@ignite.apache.org by yz...@apache.org on 2015/03/05 10:05:38 UTC
[38/58] [abbrv] incubator-ignite git commit: IGNITE-386: Squashed
changes.
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/6423cf02/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java
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diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java
new file mode 100644
index 0000000..93c0df4
--- /dev/null
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java
@@ -0,0 +1,1237 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.hadoop.fs.v1;
+
+import org.apache.hadoop.conf.*;
+import org.apache.hadoop.fs.*;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.permission.*;
+import org.apache.hadoop.hdfs.*;
+import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.util.*;
+import org.apache.ignite.*;
+import org.apache.ignite.igfs.*;
+import org.apache.ignite.internal.igfs.common.*;
+import org.apache.ignite.internal.processors.hadoop.*;
+import org.apache.ignite.internal.processors.hadoop.igfs.*;
+import org.apache.ignite.internal.processors.igfs.*;
+import org.apache.ignite.internal.util.typedef.*;
+import org.apache.ignite.internal.util.typedef.internal.*;
+import org.jetbrains.annotations.*;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import java.util.concurrent.atomic.*;
+
+import static org.apache.ignite.configuration.FileSystemConfiguration.*;
+import static org.apache.ignite.igfs.IgfsMode.*;
+import static org.apache.ignite.internal.processors.hadoop.fs.HadoopParameters.*;
+import static org.apache.ignite.internal.processors.hadoop.igfs.HadoopIgfsUtils.*;
+import static org.apache.ignite.internal.processors.igfs.IgfsEx.*;
+
+/**
+ * {@code IGFS} Hadoop 1.x file system driver over file system API. To use
+ * {@code IGFS} as Hadoop file system, you should configure this class
+ * in Hadoop's {@code core-site.xml} as follows:
+ * <pre name="code" class="xml">
+ * <property>
+ * <name>fs.default.name</name>
+ * <value>igfs://ipc</value>
+ * </property>
+ *
+ * <property>
+ * <name>fs.igfs.impl</name>
+ * <value>org.apache.ignite.hadoop.fs.v1.IgniteHadoopFileSystem</value>
+ * </property>
+ * </pre>
+ * You should also add Ignite JAR and all libraries to Hadoop classpath. To
+ * do this, add following lines to {@code conf/hadoop-env.sh} script in Hadoop
+ * distribution:
+ * <pre name="code" class="bash">
+ * export IGNITE_HOME=/path/to/Ignite/distribution
+ * export HADOOP_CLASSPATH=$IGNITE_HOME/ignite*.jar
+ *
+ * for f in $IGNITE_HOME/libs/*.jar; do
+ * export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$f;
+ * done
+ * </pre>
+ * <h1 class="header">Data vs Clients Nodes</h1>
+ * Hadoop needs to use its FileSystem remotely from client nodes as well as directly on
+ * data nodes. Client nodes are responsible for basic file system operations as well as
+ * accessing data nodes remotely. Usually, client nodes are started together
+ * with {@code job-submitter} or {@code job-scheduler} processes, while data nodes are usually
+ * started together with Hadoop {@code task-tracker} processes.
+ * <p>
+ * For sample client and data node configuration refer to {@code config/hadoop/default-config-client.xml}
+ * and {@code config/hadoop/default-config.xml} configuration files in Ignite installation.
+ */
+public class IgniteHadoopFileSystem extends FileSystem {
+ /** Internal property to indicate management connection. */
+ public static final String IGFS_MANAGEMENT = "fs.igfs.management.connection";
+
+ /** Empty array of file block locations. */
+ private static final BlockLocation[] EMPTY_BLOCK_LOCATIONS = new BlockLocation[0];
+
+ /** Empty array of file statuses. */
+ public static final FileStatus[] EMPTY_FILE_STATUS = new FileStatus[0];
+
+ /** Ensures that close routine is invoked at most once. */
+ private final AtomicBoolean closeGuard = new AtomicBoolean();
+
+ /** Grid remote client. */
+ private HadoopIgfsWrapper rmtClient;
+
+ /** User name for each thread. */
+ private final ThreadLocal<String> userName = new ThreadLocal<String>(){
+ /** {@inheritDoc} */
+ @Override protected String initialValue() {
+ return DFLT_USER_NAME;
+ }
+ };
+
+ /** Working directory for each thread. */
+ private final ThreadLocal<Path> workingDir = new ThreadLocal<Path>(){
+ /** {@inheritDoc} */
+ @Override protected Path initialValue() {
+ return getHomeDirectory();
+ }
+ };
+
+ /** Default replication factor. */
+ private short dfltReplication;
+
+ /** Base file system uri. */
+ @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
+ private URI uri;
+
+ /** Authority. */
+ private String uriAuthority;
+
+ /** Client logger. */
+ private IgfsLogger clientLog;
+
+ /** Secondary URI string. */
+ private URI secondaryUri;
+
+ /** IGFS mode resolver. */
+ private IgfsModeResolver modeRslvr;
+
+ /** Secondary file system instance. */
+ private FileSystem secondaryFs;
+
+ /** Management connection flag. */
+ private boolean mgmt;
+
+ /** Whether custom sequential reads before prefetch value is provided. */
+ private boolean seqReadsBeforePrefetchOverride;
+
+ /** IGFS group block size. */
+ private long igfsGrpBlockSize;
+
+ /** Flag that controls whether file writes should be colocated. */
+ private boolean colocateFileWrites;
+
+ /** Prefer local writes. */
+ private boolean preferLocFileWrites;
+
+ /** Custom-provided sequential reads before prefetch. */
+ private int seqReadsBeforePrefetch;
+
+ /** The cache was disabled when the instance was creating. */
+ private boolean cacheEnabled;
+
+ /** {@inheritDoc} */
+ @Override public URI getUri() {
+ if (uri == null)
+ throw new IllegalStateException("URI is null (was IgniteHadoopFileSystem properly initialized?).");
+
+ return uri;
+ }
+
+ /**
+ * Enter busy state.
+ *
+ * @throws IOException If file system is stopped.
+ */
+ private void enterBusy() throws IOException {
+ if (closeGuard.get())
+ throw new IOException("File system is stopped.");
+ }
+
+ /**
+ * Leave busy state.
+ */
+ private void leaveBusy() {
+ // No-op.
+ }
+
+ /**
+ * Public setter that can be used by direct users of FS or Visor.
+ *
+ * @param colocateFileWrites Whether all ongoing file writes should be colocated.
+ */
+ @SuppressWarnings("UnusedDeclaration")
+ public void colocateFileWrites(boolean colocateFileWrites) {
+ this.colocateFileWrites = colocateFileWrites;
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("ConstantConditions")
+ @Override public void initialize(URI name, Configuration cfg) throws IOException {
+ enterBusy();
+
+ try {
+ if (rmtClient != null)
+ throw new IOException("File system is already initialized: " + rmtClient);
+
+ A.notNull(name, "name");
+ A.notNull(cfg, "cfg");
+
+ super.initialize(name, cfg);
+
+ setConf(cfg);
+
+ String disableCacheName = String.format("fs.%s.impl.disable.cache", name.getScheme());
+
+ cacheEnabled = !cfg.getBoolean(disableCacheName, false);
+
+ mgmt = cfg.getBoolean(IGFS_MANAGEMENT, false);
+
+ if (!IGFS_SCHEME.equals(name.getScheme()))
+ throw new IOException("Illegal file system URI [expected=" + IGFS_SCHEME +
+ "://[name]/[optional_path], actual=" + name + ']');
+
+ uri = name;
+
+ uriAuthority = uri.getAuthority();
+
+ setUser(cfg.get(MRJobConfig.USER_NAME, DFLT_USER_NAME));
+
+ // Override sequential reads before prefetch if needed.
+ seqReadsBeforePrefetch = parameter(cfg, PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH, uriAuthority, 0);
+
+ if (seqReadsBeforePrefetch > 0)
+ seqReadsBeforePrefetchOverride = true;
+
+ // In Ignite replication factor is controlled by data cache affinity.
+ // We use replication factor to force the whole file to be stored on local node.
+ dfltReplication = (short)cfg.getInt("dfs.replication", 3);
+
+ // Get file colocation control flag.
+ colocateFileWrites = parameter(cfg, PARAM_IGFS_COLOCATED_WRITES, uriAuthority, false);
+ preferLocFileWrites = cfg.getBoolean(PARAM_IGFS_PREFER_LOCAL_WRITES, false);
+
+ // Get log directory.
+ String logDirCfg = parameter(cfg, PARAM_IGFS_LOG_DIR, uriAuthority, DFLT_IGFS_LOG_DIR);
+
+ File logDirFile = U.resolveIgnitePath(logDirCfg);
+
+ String logDir = logDirFile != null ? logDirFile.getAbsolutePath() : null;
+
+ rmtClient = new HadoopIgfsWrapper(uriAuthority, logDir, cfg, LOG);
+
+ // Handshake.
+ IgfsHandshakeResponse handshake = rmtClient.handshake(logDir);
+
+ igfsGrpBlockSize = handshake.blockSize();
+
+ IgfsPaths paths = handshake.secondaryPaths();
+
+ // Initialize client logger.
+ Boolean logEnabled = parameter(cfg, PARAM_IGFS_LOG_ENABLED, uriAuthority, false);
+
+ if (handshake.sampling() != null ? handshake.sampling() : logEnabled) {
+ // Initiate client logger.
+ if (logDir == null)
+ throw new IOException("Failed to resolve log directory: " + logDirCfg);
+
+ Integer batchSize = parameter(cfg, PARAM_IGFS_LOG_BATCH_SIZE, uriAuthority, DFLT_IGFS_LOG_BATCH_SIZE);
+
+ clientLog = IgfsLogger.logger(uriAuthority, handshake.igfsName(), logDir, batchSize);
+ }
+ else
+ clientLog = IgfsLogger.disabledLogger();
+
+ modeRslvr = new IgfsModeResolver(paths.defaultMode(), paths.pathModes());
+
+ boolean initSecondary = paths.defaultMode() == PROXY;
+
+ if (!initSecondary && paths.pathModes() != null && !paths.pathModes().isEmpty()) {
+ for (T2<IgfsPath, IgfsMode> pathMode : paths.pathModes()) {
+ IgfsMode mode = pathMode.getValue();
+
+ if (mode == PROXY) {
+ initSecondary = true;
+
+ break;
+ }
+ }
+ }
+
+ if (initSecondary) {
+ Map<String, String> props = paths.properties();
+
+ String secUri = props.get(SECONDARY_FS_URI);
+ String secConfPath = props.get(SECONDARY_FS_CONFIG_PATH);
+
+ try {
+ SecondaryFileSystemProvider secProvider = new SecondaryFileSystemProvider(secUri, secConfPath);
+
+ secondaryFs = secProvider.createFileSystem();
+ secondaryUri = secProvider.uri();
+ }
+ catch (IOException e) {
+ if (!mgmt)
+ throw new IOException("Failed to connect to the secondary file system: " + secUri, e);
+ else
+ LOG.warn("Visor failed to create secondary file system (operations on paths with PROXY mode " +
+ "will have no effect): " + e.getMessage());
+ }
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override protected void checkPath(Path path) {
+ URI uri = path.toUri();
+
+ if (uri.isAbsolute()) {
+ if (!F.eq(uri.getScheme(), IGFS_SCHEME))
+ throw new InvalidPathException("Wrong path scheme [expected=" + IGFS_SCHEME + ", actual=" +
+ uri.getAuthority() + ']');
+
+ if (!F.eq(uri.getAuthority(), uriAuthority))
+ throw new InvalidPathException("Wrong path authority [expected=" + uriAuthority + ", actual=" +
+ uri.getAuthority() + ']');
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("deprecation")
+ @Override public short getDefaultReplication() {
+ return dfltReplication;
+ }
+
+ /** {@inheritDoc} */
+ @Override protected void finalize() throws Throwable {
+ super.finalize();
+
+ close0();
+ }
+
+ /** {@inheritDoc} */
+ @Override public void close() throws IOException {
+ if (cacheEnabled && get(getUri(), getConf()) == this)
+ return;
+
+ close0();
+ }
+
+ /**
+ * Closes file system.
+ *
+ * @throws IOException If failed.
+ */
+ private void close0() throws IOException {
+ if (closeGuard.compareAndSet(false, true)) {
+ if (LOG.isDebugEnabled())
+ LOG.debug("File system closed [uri=" + uri + ", endpoint=" + uriAuthority + ']');
+
+ if (rmtClient == null)
+ return;
+
+ super.close();
+
+ rmtClient.close(false);
+
+ if (clientLog.isLogEnabled())
+ clientLog.close();
+
+ if (secondaryFs != null)
+ U.closeQuiet(secondaryFs);
+
+ // Reset initialized resources.
+ uri = null;
+ rmtClient = null;
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setTimes(Path p, long mtime, long atime) throws IOException {
+ enterBusy();
+
+ try {
+ A.notNull(p, "p");
+
+ if (mode(p) == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ // No-op for management connection.
+ return;
+ }
+
+ secondaryFs.setTimes(toSecondary(p), mtime, atime);
+ }
+ else {
+ IgfsPath path = convert(p);
+
+ rmtClient.setTimes(path, atime, mtime);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setPermission(Path p, FsPermission perm) throws IOException {
+ enterBusy();
+
+ try {
+ A.notNull(p, "p");
+
+ if (mode(p) == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ // No-op for management connection.
+ return;
+ }
+
+ secondaryFs.setPermission(toSecondary(p), perm);
+ }
+ else if (rmtClient.update(convert(p), permission(perm)) == null) {
+ throw new IOException("Failed to set file permission (file not found?)" +
+ " [path=" + p + ", perm=" + perm + ']');
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setOwner(Path p, String username, String grpName) throws IOException {
+ A.notNull(p, "p");
+ A.notNull(username, "username");
+ A.notNull(grpName, "grpName");
+
+ enterBusy();
+
+ try {
+ if (mode(p) == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ // No-op for management connection.
+ return;
+ }
+
+ secondaryFs.setOwner(toSecondary(p), username, grpName);
+ }
+ else if (rmtClient.update(convert(p), F.asMap(PROP_USER_NAME, username, PROP_GROUP_NAME, grpName)) == null)
+ throw new IOException("Failed to set file permission (file not found?)" +
+ " [path=" + p + ", userName=" + username + ", groupName=" + grpName + ']');
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public FSDataInputStream open(Path f, int bufSize) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = mode(path);
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ throw new IOException("Failed to open file (secondary file system is not initialized): " + f);
+ }
+
+ FSDataInputStream is = secondaryFs.open(toSecondary(f), bufSize);
+
+ if (clientLog.isLogEnabled()) {
+ // At this point we do not know file size, so we perform additional request to remote FS to get it.
+ FileStatus status = secondaryFs.getFileStatus(toSecondary(f));
+
+ long size = status != null ? status.getLen() : -1;
+
+ long logId = IgfsLogger.nextId();
+
+ clientLog.logOpen(logId, path, PROXY, bufSize, size);
+
+ return new FSDataInputStream(new HadoopIgfsProxyInputStream(is, clientLog, logId));
+ }
+ else
+ return is;
+ }
+ else {
+ HadoopIgfsStreamDelegate stream = seqReadsBeforePrefetchOverride ?
+ rmtClient.open(path, seqReadsBeforePrefetch) : rmtClient.open(path);
+
+ long logId = -1;
+
+ if (clientLog.isLogEnabled()) {
+ logId = IgfsLogger.nextId();
+
+ clientLog.logOpen(logId, path, mode, bufSize, stream.length());
+ }
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opening input stream [thread=" + Thread.currentThread().getName() + ", path=" + path +
+ ", bufSize=" + bufSize + ']');
+
+ HadoopIgfsInputStream igfsIn = new HadoopIgfsInputStream(stream, stream.length(),
+ bufSize, LOG, clientLog, logId);
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opened input stream [path=" + path + ", delegate=" + stream + ']');
+
+ return new FSDataInputStream(igfsIn);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("deprecation")
+ @Override public FSDataOutputStream create(Path f, FsPermission perm, boolean overwrite, int bufSize,
+ short replication, long blockSize, Progressable progress) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ OutputStream out = null;
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = mode(path);
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opening output stream in create [thread=" + Thread.currentThread().getName() + "path=" +
+ path + ", overwrite=" + overwrite + ", bufSize=" + bufSize + ']');
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ throw new IOException("Failed to create file (secondary file system is not initialized): " + f);
+ }
+
+ FSDataOutputStream os =
+ secondaryFs.create(toSecondary(f), perm, overwrite, bufSize, replication, blockSize, progress);
+
+ if (clientLog.isLogEnabled()) {
+ long logId = IgfsLogger.nextId();
+
+ clientLog.logCreate(logId, path, PROXY, overwrite, bufSize, replication, blockSize);
+
+ return new FSDataOutputStream(new HadoopIgfsProxyOutputStream(os, clientLog, logId));
+ }
+ else
+ return os;
+ }
+ else {
+ // Create stream and close it in the 'finally' section if any sequential operation failed.
+ HadoopIgfsStreamDelegate stream = rmtClient.create(path, overwrite, colocateFileWrites,
+ replication, blockSize, F.asMap(PROP_PERMISSION, toString(perm),
+ PROP_PREFER_LOCAL_WRITES, Boolean.toString(preferLocFileWrites)));
+
+ assert stream != null;
+
+ long logId = -1;
+
+ if (clientLog.isLogEnabled()) {
+ logId = IgfsLogger.nextId();
+
+ clientLog.logCreate(logId, path, mode, overwrite, bufSize, replication, blockSize);
+ }
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opened output stream in create [path=" + path + ", delegate=" + stream + ']');
+
+ HadoopIgfsOutputStream igfsOut = new HadoopIgfsOutputStream(stream, LOG, clientLog,
+ logId);
+
+ bufSize = Math.max(64 * 1024, bufSize);
+
+ out = new BufferedOutputStream(igfsOut, bufSize);
+
+ FSDataOutputStream res = new FSDataOutputStream(out, null, 0);
+
+ // Mark stream created successfully.
+ out = null;
+
+ return res;
+ }
+ }
+ finally {
+ // Close if failed during stream creation.
+ if (out != null)
+ U.closeQuiet(out);
+
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("deprecation")
+ @Override public FSDataOutputStream append(Path f, int bufSize, Progressable progress) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = mode(path);
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opening output stream in append [thread=" + Thread.currentThread().getName() +
+ ", path=" + path + ", bufSize=" + bufSize + ']');
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ throw new IOException("Failed to append file (secondary file system is not initialized): " + f);
+ }
+
+ FSDataOutputStream os = secondaryFs.append(toSecondary(f), bufSize, progress);
+
+ if (clientLog.isLogEnabled()) {
+ long logId = IgfsLogger.nextId();
+
+ clientLog.logAppend(logId, path, PROXY, bufSize); // Don't have stream ID.
+
+ return new FSDataOutputStream(new HadoopIgfsProxyOutputStream(os, clientLog, logId));
+ }
+ else
+ return os;
+ }
+ else {
+ HadoopIgfsStreamDelegate stream = rmtClient.append(path, false, null);
+
+ assert stream != null;
+
+ long logId = -1;
+
+ if (clientLog.isLogEnabled()) {
+ logId = IgfsLogger.nextId();
+
+ clientLog.logAppend(logId, path, mode, bufSize);
+ }
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opened output stream in append [path=" + path + ", delegate=" + stream + ']');
+
+ HadoopIgfsOutputStream igfsOut = new HadoopIgfsOutputStream(stream, LOG, clientLog,
+ logId);
+
+ bufSize = Math.max(64 * 1024, bufSize);
+
+ BufferedOutputStream out = new BufferedOutputStream(igfsOut, bufSize);
+
+ return new FSDataOutputStream(out, null, 0);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("unchecked")
+ @Override public boolean rename(Path src, Path dst) throws IOException {
+ A.notNull(src, "src");
+ A.notNull(dst, "dst");
+
+ enterBusy();
+
+ try {
+ IgfsPath srcPath = convert(src);
+ IgfsPath dstPath = convert(dst);
+ IgfsMode mode = mode(srcPath);
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ return false;
+ }
+
+ if (clientLog.isLogEnabled())
+ clientLog.logRename(srcPath, PROXY, dstPath);
+
+ return secondaryFs.rename(toSecondary(src), toSecondary(dst));
+ }
+ else {
+ // Will throw exception if failed.
+ rmtClient.rename(srcPath, dstPath);
+
+ if (clientLog.isLogEnabled())
+ clientLog.logRename(srcPath, mode, dstPath);
+
+ return true;
+ }
+ }
+ catch (IOException e) {
+ // Intentionally ignore IGFS exceptions here to follow Hadoop contract.
+ if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null ||
+ !X.hasCause(e.getCause(), IgfsException.class)))
+ throw e;
+ else
+ return false;
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("deprecation")
+ @Override public boolean delete(Path f) throws IOException {
+ return delete(f, false);
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("unchecked")
+ @Override public boolean delete(Path f, boolean recursive) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = mode(path);
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ return false;
+ }
+
+ if (clientLog.isLogEnabled())
+ clientLog.logDelete(path, PROXY, recursive);
+
+ return secondaryFs.delete(toSecondary(f), recursive);
+ }
+ else {
+ // Will throw exception if delete failed.
+ boolean res = rmtClient.delete(path, recursive);
+
+ if (clientLog.isLogEnabled())
+ clientLog.logDelete(path, mode, recursive);
+
+ return res;
+ }
+ }
+ catch (IOException e) {
+ // Intentionally ignore IGFS exceptions here to follow Hadoop contract.
+ if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null ||
+ !X.hasCause(e.getCause(), IgfsException.class)))
+ throw e;
+ else
+ return false;
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public FileStatus[] listStatus(Path f) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = mode(path);
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ return EMPTY_FILE_STATUS;
+ }
+
+ FileStatus[] arr = secondaryFs.listStatus(toSecondary(f));
+
+ if (arr == null)
+ throw new FileNotFoundException("File " + f + " does not exist.");
+
+ for (int i = 0; i < arr.length; i++)
+ arr[i] = toPrimary(arr[i]);
+
+ if (clientLog.isLogEnabled()) {
+ String[] fileArr = new String[arr.length];
+
+ for (int i = 0; i < arr.length; i++)
+ fileArr[i] = arr[i].getPath().toString();
+
+ clientLog.logListDirectory(path, PROXY, fileArr);
+ }
+
+ return arr;
+ }
+ else {
+ Collection<IgfsFile> list = rmtClient.listFiles(path);
+
+ if (list == null)
+ throw new FileNotFoundException("File " + f + " does not exist.");
+
+ List<IgfsFile> files = new ArrayList<>(list);
+
+ FileStatus[] arr = new FileStatus[files.size()];
+
+ for (int i = 0; i < arr.length; i++)
+ arr[i] = convert(files.get(i));
+
+ if (clientLog.isLogEnabled()) {
+ String[] fileArr = new String[arr.length];
+
+ for (int i = 0; i < arr.length; i++)
+ fileArr[i] = arr[i].getPath().toString();
+
+ clientLog.logListDirectory(path, mode, fileArr);
+ }
+
+ return arr;
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public Path getHomeDirectory() {
+ Path path = new Path("/user/" + userName.get());
+
+ return path.makeQualified(getUri(), null);
+ }
+
+ /**
+ * Set user name and default working directory for current thread.
+ *
+ * @param userName User name.
+ */
+ public void setUser(String userName) {
+ this.userName.set(userName);
+
+ setWorkingDirectory(null);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setWorkingDirectory(Path newPath) {
+ if (newPath == null) {
+ Path homeDir = getHomeDirectory();
+
+ if (secondaryFs != null)
+ secondaryFs.setWorkingDirectory(toSecondary(homeDir));
+
+ workingDir.set(homeDir);
+ }
+ else {
+ Path fixedNewPath = fixRelativePart(newPath);
+
+ String res = fixedNewPath.toUri().getPath();
+
+ if (!DFSUtil.isValidName(res))
+ throw new IllegalArgumentException("Invalid DFS directory name " + res);
+
+ if (secondaryFs != null)
+ secondaryFs.setWorkingDirectory(toSecondary(fixedNewPath));
+
+ workingDir.set(fixedNewPath);
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public Path getWorkingDirectory() {
+ return workingDir.get();
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("unchecked")
+ @Override public boolean mkdirs(Path f, FsPermission perm) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = mode(path);
+
+ if (mode == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ return false;
+ }
+
+ if (clientLog.isLogEnabled())
+ clientLog.logMakeDirectory(path, PROXY);
+
+ return secondaryFs.mkdirs(toSecondary(f), perm);
+ }
+ else {
+ boolean mkdirRes = rmtClient.mkdirs(path, permission(perm));
+
+ if (clientLog.isLogEnabled())
+ clientLog.logMakeDirectory(path, mode);
+
+ return mkdirRes;
+ }
+ }
+ catch (IOException e) {
+ // Intentionally ignore IGFS exceptions here to follow Hadoop contract.
+ if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null ||
+ !X.hasCause(e.getCause(), IgfsException.class)))
+ throw e;
+ else
+ return false;
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public FileStatus getFileStatus(Path f) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ if (mode(f) == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ throw new IOException("Failed to get file status (secondary file system is not initialized): " + f);
+ }
+
+ return toPrimary(secondaryFs.getFileStatus(toSecondary(f)));
+ }
+ else {
+ IgfsFile info = rmtClient.info(convert(f));
+
+ if (info == null)
+ throw new FileNotFoundException("File not found: " + f);
+
+ return convert(info);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public ContentSummary getContentSummary(Path f) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ if (mode(f) == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ throw new IOException("Failed to get content summary (secondary file system is not initialized): " +
+ f);
+ }
+
+ return secondaryFs.getContentSummary(toSecondary(f));
+ }
+ else {
+ IgfsPathSummary sum = rmtClient.contentSummary(convert(f));
+
+ return new ContentSummary(sum.totalLength(), sum.filesCount(), sum.directoriesCount(),
+ -1, sum.totalLength(), rmtClient.fsStatus().spaceTotal());
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public BlockLocation[] getFileBlockLocations(FileStatus status, long start, long len) throws IOException {
+ A.notNull(status, "status");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(status.getPath());
+
+ if (mode(status.getPath()) == PROXY) {
+ if (secondaryFs == null) {
+ assert mgmt;
+
+ return EMPTY_BLOCK_LOCATIONS;
+ }
+
+ Path secPath = toSecondary(status.getPath());
+
+ return secondaryFs.getFileBlockLocations(secondaryFs.getFileStatus(secPath), start, len);
+ }
+ else {
+ long now = System.currentTimeMillis();
+
+ List<IgfsBlockLocation> affinity = new ArrayList<>(rmtClient.affinity(path, start, len));
+
+ BlockLocation[] arr = new BlockLocation[affinity.size()];
+
+ for (int i = 0; i < arr.length; i++)
+ arr[i] = convert(affinity.get(i));
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Fetched file locations [path=" + path + ", fetchTime=" +
+ (System.currentTimeMillis() - now) + ", locations=" + Arrays.asList(arr) + ']');
+
+ return arr;
+ }
+ }
+ catch (FileNotFoundException ignored) {
+ return EMPTY_BLOCK_LOCATIONS;
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("deprecation")
+ @Override public long getDefaultBlockSize() {
+ return igfsGrpBlockSize;
+ }
+
+ /**
+ * Resolve path mode.
+ *
+ * @param path HDFS path.
+ * @return Path mode.
+ */
+ public IgfsMode mode(Path path) {
+ return mode(convert(path));
+ }
+
+ /**
+ * Resolve path mode.
+ *
+ * @param path IGFS path.
+ * @return Path mode.
+ */
+ public IgfsMode mode(IgfsPath path) {
+ return modeRslvr.resolveMode(path);
+ }
+
+ /**
+ * Convert the given path to path acceptable by the primary file system.
+ *
+ * @param path Path.
+ * @return Primary file system path.
+ */
+ private Path toPrimary(Path path) {
+ return convertPath(path, uri);
+ }
+
+ /**
+ * Convert the given path to path acceptable by the secondary file system.
+ *
+ * @param path Path.
+ * @return Secondary file system path.
+ */
+ private Path toSecondary(Path path) {
+ assert secondaryFs != null;
+ assert secondaryUri != null;
+
+ return convertPath(path, secondaryUri);
+ }
+
+ /**
+ * Convert path using the given new URI.
+ *
+ * @param path Old path.
+ * @param newUri New URI.
+ * @return New path.
+ */
+ private Path convertPath(Path path, URI newUri) {
+ assert newUri != null;
+
+ if (path != null) {
+ URI pathUri = path.toUri();
+
+ try {
+ return new Path(new URI(pathUri.getScheme() != null ? newUri.getScheme() : null,
+ pathUri.getAuthority() != null ? newUri.getAuthority() : null, pathUri.getPath(), null, null));
+ }
+ catch (URISyntaxException e) {
+ throw new IgniteException("Failed to construct secondary file system path from the primary file " +
+ "system path: " + path, e);
+ }
+ }
+ else
+ return null;
+ }
+
+ /**
+ * Convert a file status obtained from the secondary file system to a status of the primary file system.
+ *
+ * @param status Secondary file system status.
+ * @return Primary file system status.
+ */
+ @SuppressWarnings("deprecation")
+ private FileStatus toPrimary(FileStatus status) {
+ return status != null ? new FileStatus(status.getLen(), status.isDir(), status.getReplication(),
+ status.getBlockSize(), status.getModificationTime(), status.getAccessTime(), status.getPermission(),
+ status.getOwner(), status.getGroup(), toPrimary(status.getPath())) : null;
+ }
+
+ /**
+ * Convert IGFS path into Hadoop path.
+ *
+ * @param path IGFS path.
+ * @return Hadoop path.
+ */
+ private Path convert(IgfsPath path) {
+ return new Path(IGFS_SCHEME, uriAuthority, path.toString());
+ }
+
+ /**
+ * Convert Hadoop path into IGFS path.
+ *
+ * @param path Hadoop path.
+ * @return IGFS path.
+ */
+ @Nullable private IgfsPath convert(@Nullable Path path) {
+ if (path == null)
+ return null;
+
+ return path.isAbsolute() ? new IgfsPath(path.toUri().getPath()) :
+ new IgfsPath(convert(workingDir.get()), path.toUri().getPath());
+ }
+
+ /**
+ * Convert IGFS affinity block location into Hadoop affinity block location.
+ *
+ * @param block IGFS affinity block location.
+ * @return Hadoop affinity block location.
+ */
+ private BlockLocation convert(IgfsBlockLocation block) {
+ Collection<String> names = block.names();
+ Collection<String> hosts = block.hosts();
+
+ return new BlockLocation(
+ names.toArray(new String[names.size()]) /* hostname:portNumber of data nodes */,
+ hosts.toArray(new String[hosts.size()]) /* hostnames of data nodes */,
+ block.start(), block.length()
+ ) {
+ @Override public String toString() {
+ try {
+ return "BlockLocation [offset=" + getOffset() + ", length=" + getLength() +
+ ", hosts=" + Arrays.asList(getHosts()) + ", names=" + Arrays.asList(getNames()) + ']';
+ }
+ catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+ };
+ }
+
+ /**
+ * Convert IGFS file information into Hadoop file status.
+ *
+ * @param file IGFS file information.
+ * @return Hadoop file status.
+ */
+ @SuppressWarnings("deprecation")
+ private FileStatus convert(IgfsFile file) {
+ return new FileStatus(file.length(), file.isDirectory(), getDefaultReplication(),
+ file.groupBlockSize(), file.modificationTime(), file.accessTime(), permission(file),
+ file.property(PROP_USER_NAME, DFLT_USER_NAME), file.property(PROP_GROUP_NAME, "users"),
+ convert(file.path())) {
+ @Override public String toString() {
+ return "FileStatus [path=" + getPath() + ", isDir=" + isDir() + ", len=" + getLen() +
+ ", mtime=" + getModificationTime() + ", atime=" + getAccessTime() + ']';
+ }
+ };
+ }
+
+ /**
+ * Convert Hadoop permission into IGFS file attribute.
+ *
+ * @param perm Hadoop permission.
+ * @return IGFS attributes.
+ */
+ private Map<String, String> permission(FsPermission perm) {
+ if (perm == null)
+ perm = FsPermission.getDefault();
+
+ return F.asMap(PROP_PERMISSION, toString(perm));
+ }
+
+ /**
+ * @param perm Permission.
+ * @return String.
+ */
+ private static String toString(FsPermission perm) {
+ return String.format("%04o", perm.toShort());
+ }
+
+ /**
+ * Convert IGFS file attributes into Hadoop permission.
+ *
+ * @param file File info.
+ * @return Hadoop permission.
+ */
+ private FsPermission permission(IgfsFile file) {
+ String perm = file.property(PROP_PERMISSION, null);
+
+ if (perm == null)
+ return FsPermission.getDefault();
+
+ try {
+ return new FsPermission((short)Integer.parseInt(perm, 8));
+ }
+ catch (NumberFormatException ignore) {
+ return FsPermission.getDefault();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public String toString() {
+ return S.toString(IgniteHadoopFileSystem.class, this);
+ }
+}
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/6423cf02/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/package.html
----------------------------------------------------------------------
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/package.html b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/package.html
new file mode 100644
index 0000000..69801af
--- /dev/null
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v1/package.html
@@ -0,0 +1,24 @@
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You under the Apache License, Version 2.0
+ (the "License"); you may not use this file except in compliance with
+ the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<body>
+ <!-- Package description. -->
+ Contains Ignite Hadoop 1.x <code>FileSystem</code> implementation.
+</body>
+</html>
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/6423cf02/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java
----------------------------------------------------------------------
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java
new file mode 100644
index 0000000..70ad99f
--- /dev/null
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java
@@ -0,0 +1,982 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.hadoop.fs.v2;
+
+import org.apache.commons.logging.*;
+import org.apache.hadoop.conf.*;
+import org.apache.hadoop.fs.*;
+import org.apache.hadoop.fs.Options;
+import org.apache.hadoop.fs.permission.*;
+import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.util.*;
+import org.apache.ignite.*;
+import org.apache.ignite.igfs.*;
+import org.apache.ignite.internal.igfs.common.*;
+import org.apache.ignite.internal.processors.hadoop.*;
+import org.apache.ignite.internal.processors.hadoop.igfs.*;
+import org.apache.ignite.internal.processors.igfs.*;
+import org.apache.ignite.internal.util.typedef.*;
+import org.apache.ignite.internal.util.typedef.internal.*;
+import org.jetbrains.annotations.*;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import java.util.concurrent.atomic.*;
+
+import static org.apache.ignite.configuration.FileSystemConfiguration.*;
+import static org.apache.ignite.igfs.IgfsMode.*;
+import static org.apache.ignite.internal.processors.hadoop.fs.HadoopParameters.*;
+import static org.apache.ignite.internal.processors.hadoop.igfs.HadoopIgfsUtils.*;
+import static org.apache.ignite.internal.processors.igfs.IgfsEx.*;
+
+/**
+ * {@code IGFS} Hadoop 2.x file system driver over file system API. To use
+ * {@code IGFS} as Hadoop file system, you should configure this class
+ * in Hadoop's {@code core-site.xml} as follows:
+ * <pre name="code" class="xml">
+ * <property>
+ * <name>fs.default.name</name>
+ * <value>igfs://ipc</value>
+ * </property>
+ *
+ * <property>
+ * <name>fs.igfs.impl</name>
+ * <value>org.apache.ignite.hadoop.fs.v2.IgniteHadoopFileSystem</value>
+ * </property>
+ * </pre>
+ * You should also add Ignite JAR and all libraries to Hadoop classpath. To
+ * do this, add following lines to {@code conf/hadoop-env.sh} script in Hadoop
+ * distribution:
+ * <pre name="code" class="bash">
+ * export IGNITE_HOME=/path/to/Ignite/distribution
+ * export HADOOP_CLASSPATH=$IGNITE_HOME/ignite*.jar
+ *
+ * for f in $IGNITE_HOME/libs/*.jar; do
+ * export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$f;
+ * done
+ * </pre>
+ * <h1 class="header">Data vs Clients Nodes</h1>
+ * Hadoop needs to use its FileSystem remotely from client nodes as well as directly on
+ * data nodes. Client nodes are responsible for basic file system operations as well as
+ * accessing data nodes remotely. Usually, client nodes are started together
+ * with {@code job-submitter} or {@code job-scheduler} processes, while data nodes are usually
+ * started together with Hadoop {@code task-tracker} processes.
+ * <p>
+ * For sample client and data node configuration refer to {@code config/hadoop/default-config-client.xml}
+ * and {@code config/hadoop/default-config.xml} configuration files in Ignite installation.
+ */
+public class IgniteHadoopFileSystem extends AbstractFileSystem implements Closeable {
+ /** Logger. */
+ private static final Log LOG = LogFactory.getLog(IgniteHadoopFileSystem.class);
+
+ /** Ensures that close routine is invoked at most once. */
+ private final AtomicBoolean closeGuard = new AtomicBoolean();
+
+ /** Grid remote client. */
+ private HadoopIgfsWrapper rmtClient;
+
+ /** Working directory. */
+ private IgfsPath workingDir;
+
+ /** URI. */
+ private URI uri;
+
+ /** Authority. */
+ private String uriAuthority;
+
+ /** Client logger. */
+ private IgfsLogger clientLog;
+
+ /** Server block size. */
+ private long grpBlockSize;
+
+ /** Default replication factor. */
+ private short dfltReplication;
+
+ /** Secondary URI string. */
+ private URI secondaryUri;
+
+ /** Mode resolver. */
+ private IgfsModeResolver modeRslvr;
+
+ /** Secondary file system instance. */
+ private AbstractFileSystem secondaryFs;
+
+ /** Whether custom sequential reads before prefetch value is provided. */
+ private boolean seqReadsBeforePrefetchOverride;
+
+ /** Custom-provided sequential reads before prefetch. */
+ private int seqReadsBeforePrefetch;
+
+ /** Flag that controls whether file writes should be colocated on data node. */
+ private boolean colocateFileWrites;
+
+ /** Prefer local writes. */
+ private boolean preferLocFileWrites;
+
+ /**
+ * @param name URI for file system.
+ * @param cfg Configuration.
+ * @throws URISyntaxException if name has invalid syntax.
+ * @throws IOException If initialization failed.
+ */
+ public IgniteHadoopFileSystem(URI name, Configuration cfg) throws URISyntaxException, IOException {
+ super(HadoopIgfsEndpoint.normalize(name), IGFS_SCHEME, false, -1);
+
+ uri = name;
+
+ try {
+ initialize(name, cfg);
+ }
+ catch (IOException e) {
+ // Close client if exception occurred.
+ if (rmtClient != null)
+ rmtClient.close(false);
+
+ throw e;
+ }
+
+ workingDir = new IgfsPath("/user/" + cfg.get(MRJobConfig.USER_NAME, DFLT_USER_NAME));
+ }
+
+ /** {@inheritDoc} */
+ @Override public void checkPath(Path path) {
+ URI uri = path.toUri();
+
+ if (uri.isAbsolute()) {
+ if (!F.eq(uri.getScheme(), IGFS_SCHEME))
+ throw new InvalidPathException("Wrong path scheme [expected=" + IGFS_SCHEME + ", actual=" +
+ uri.getAuthority() + ']');
+
+ if (!F.eq(uri.getAuthority(), uriAuthority))
+ throw new InvalidPathException("Wrong path authority [expected=" + uriAuthority + ", actual=" +
+ uri.getAuthority() + ']');
+ }
+ }
+
+ /**
+ * Public setter that can be used by direct users of FS or Visor.
+ *
+ * @param colocateFileWrites Whether all ongoing file writes should be colocated.
+ */
+ @SuppressWarnings("UnusedDeclaration")
+ public void colocateFileWrites(boolean colocateFileWrites) {
+ this.colocateFileWrites = colocateFileWrites;
+ }
+
+ /**
+ * Enter busy state.
+ *
+ * @throws IOException If file system is stopped.
+ */
+ private void enterBusy() throws IOException {
+ if (closeGuard.get())
+ throw new IOException("File system is stopped.");
+ }
+
+ /**
+ * Leave busy state.
+ */
+ private void leaveBusy() {
+ // No-op.
+ }
+
+ /**
+ * @param name URI passed to constructor.
+ * @param cfg Configuration passed to constructor.
+ * @throws IOException If initialization failed.
+ */
+ @SuppressWarnings("ConstantConditions")
+ private void initialize(URI name, Configuration cfg) throws IOException {
+ enterBusy();
+
+ try {
+ if (rmtClient != null)
+ throw new IOException("File system is already initialized: " + rmtClient);
+
+ A.notNull(name, "name");
+ A.notNull(cfg, "cfg");
+
+ if (!IGFS_SCHEME.equals(name.getScheme()))
+ throw new IOException("Illegal file system URI [expected=" + IGFS_SCHEME +
+ "://[name]/[optional_path], actual=" + name + ']');
+
+ uriAuthority = name.getAuthority();
+
+ // Override sequential reads before prefetch if needed.
+ seqReadsBeforePrefetch = parameter(cfg, PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH, uriAuthority, 0);
+
+ if (seqReadsBeforePrefetch > 0)
+ seqReadsBeforePrefetchOverride = true;
+
+ // In Ignite replication factor is controlled by data cache affinity.
+ // We use replication factor to force the whole file to be stored on local node.
+ dfltReplication = (short)cfg.getInt("dfs.replication", 3);
+
+ // Get file colocation control flag.
+ colocateFileWrites = parameter(cfg, PARAM_IGFS_COLOCATED_WRITES, uriAuthority, false);
+ preferLocFileWrites = cfg.getBoolean(PARAM_IGFS_PREFER_LOCAL_WRITES, false);
+
+ // Get log directory.
+ String logDirCfg = parameter(cfg, PARAM_IGFS_LOG_DIR, uriAuthority, DFLT_IGFS_LOG_DIR);
+
+ File logDirFile = U.resolveIgnitePath(logDirCfg);
+
+ String logDir = logDirFile != null ? logDirFile.getAbsolutePath() : null;
+
+ rmtClient = new HadoopIgfsWrapper(uriAuthority, logDir, cfg, LOG);
+
+ // Handshake.
+ IgfsHandshakeResponse handshake = rmtClient.handshake(logDir);
+
+ grpBlockSize = handshake.blockSize();
+
+ IgfsPaths paths = handshake.secondaryPaths();
+
+ Boolean logEnabled = parameter(cfg, PARAM_IGFS_LOG_ENABLED, uriAuthority, false);
+
+ if (handshake.sampling() != null ? handshake.sampling() : logEnabled) {
+ // Initiate client logger.
+ if (logDir == null)
+ throw new IOException("Failed to resolve log directory: " + logDirCfg);
+
+ Integer batchSize = parameter(cfg, PARAM_IGFS_LOG_BATCH_SIZE, uriAuthority, DFLT_IGFS_LOG_BATCH_SIZE);
+
+ clientLog = IgfsLogger.logger(uriAuthority, handshake.igfsName(), logDir, batchSize);
+ }
+ else
+ clientLog = IgfsLogger.disabledLogger();
+
+ modeRslvr = new IgfsModeResolver(paths.defaultMode(), paths.pathModes());
+
+ boolean initSecondary = paths.defaultMode() == PROXY;
+
+ if (!initSecondary && paths.pathModes() != null) {
+ for (T2<IgfsPath, IgfsMode> pathMode : paths.pathModes()) {
+ IgfsMode mode = pathMode.getValue();
+
+ if (mode == PROXY) {
+ initSecondary = true;
+
+ break;
+ }
+ }
+ }
+
+ if (initSecondary) {
+ Map<String, String> props = paths.properties();
+
+ String secUri = props.get(SECONDARY_FS_URI);
+ String secConfPath = props.get(SECONDARY_FS_CONFIG_PATH);
+
+ try {
+ SecondaryFileSystemProvider secProvider = new SecondaryFileSystemProvider(secUri, secConfPath);
+
+ secondaryFs = secProvider.createAbstractFileSystem();
+ secondaryUri = secProvider.uri();
+ }
+ catch (IOException e) {
+ throw new IOException("Failed to connect to the secondary file system: " + secUri, e);
+ }
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void close() throws IOException {
+ if (closeGuard.compareAndSet(false, true)) {
+ if (rmtClient == null)
+ return;
+
+ rmtClient.close(false);
+
+ if (clientLog.isLogEnabled())
+ clientLog.close();
+
+ // Reset initialized resources.
+ rmtClient = null;
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public URI getUri() {
+ return uri;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int getUriDefaultPort() {
+ return -1;
+ }
+
+ /** {@inheritDoc} */
+ @Override public FsServerDefaults getServerDefaults() throws IOException {
+ return new FsServerDefaults(grpBlockSize, (int)grpBlockSize, (int)grpBlockSize, dfltReplication, 64 * 1024,
+ false, 0, DataChecksum.Type.NULL);
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean setReplication(Path f, short replication) throws IOException {
+ return mode(f) == PROXY && secondaryFs.setReplication(f, replication);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setTimes(Path f, long mtime, long atime) throws IOException {
+ if (mode(f) == PROXY)
+ secondaryFs.setTimes(f, mtime, atime);
+ else {
+ if (mtime == -1 && atime == -1)
+ return;
+
+ rmtClient.setTimes(convert(f), atime, mtime);
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public FsStatus getFsStatus() throws IOException {
+ IgfsStatus status = rmtClient.fsStatus();
+
+ return new FsStatus(status.spaceTotal(), status.spaceUsed(), status.spaceTotal() - status.spaceUsed());
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setPermission(Path p, FsPermission perm) throws IOException {
+ enterBusy();
+
+ try {
+ A.notNull(p, "p");
+
+ if (mode(p) == PROXY)
+ secondaryFs.setPermission(toSecondary(p), perm);
+ else {
+ if (rmtClient.update(convert(p), permission(perm)) == null)
+ throw new IOException("Failed to set file permission (file not found?)" +
+ " [path=" + p + ", perm=" + perm + ']');
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setOwner(Path p, String usr, String grp) throws IOException {
+ A.notNull(p, "p");
+ A.notNull(usr, "username");
+ A.notNull(grp, "grpName");
+
+ enterBusy();
+
+ try {
+ if (mode(p) == PROXY)
+ secondaryFs.setOwner(toSecondary(p), usr, grp);
+ else if (rmtClient.update(convert(p), F.asMap(PROP_USER_NAME, usr, PROP_GROUP_NAME, grp)) == null)
+ throw new IOException("Failed to set file permission (file not found?)" +
+ " [path=" + p + ", username=" + usr + ", grpName=" + grp + ']');
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public FSDataInputStream open(Path f, int bufSize) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = modeRslvr.resolveMode(path);
+
+ if (mode == PROXY) {
+ FSDataInputStream is = secondaryFs.open(toSecondary(f), bufSize);
+
+ if (clientLog.isLogEnabled()) {
+ // At this point we do not know file size, so we perform additional request to remote FS to get it.
+ FileStatus status = secondaryFs.getFileStatus(toSecondary(f));
+
+ long size = status != null ? status.getLen() : -1;
+
+ long logId = IgfsLogger.nextId();
+
+ clientLog.logOpen(logId, path, PROXY, bufSize, size);
+
+ return new FSDataInputStream(new HadoopIgfsProxyInputStream(is, clientLog, logId));
+ }
+ else
+ return is;
+ }
+ else {
+ HadoopIgfsStreamDelegate stream = seqReadsBeforePrefetchOverride ?
+ rmtClient.open(path, seqReadsBeforePrefetch) : rmtClient.open(path);
+
+ long logId = -1;
+
+ if (clientLog.isLogEnabled()) {
+ logId = IgfsLogger.nextId();
+
+ clientLog.logOpen(logId, path, mode, bufSize, stream.length());
+ }
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opening input stream [thread=" + Thread.currentThread().getName() + ", path=" + path +
+ ", bufSize=" + bufSize + ']');
+
+ HadoopIgfsInputStream igfsIn = new HadoopIgfsInputStream(stream, stream.length(),
+ bufSize, LOG, clientLog, logId);
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opened input stream [path=" + path + ", delegate=" + stream + ']');
+
+ return new FSDataInputStream(igfsIn);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings("deprecation")
+ @Override public FSDataOutputStream createInternal(
+ Path f,
+ EnumSet<CreateFlag> flag,
+ FsPermission perm,
+ int bufSize,
+ short replication,
+ long blockSize,
+ Progressable progress,
+ Options.ChecksumOpt checksumOpt,
+ boolean createParent
+ ) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ boolean overwrite = flag.contains(CreateFlag.OVERWRITE);
+ boolean append = flag.contains(CreateFlag.APPEND);
+ boolean create = flag.contains(CreateFlag.CREATE);
+
+ OutputStream out = null;
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = modeRslvr.resolveMode(path);
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opening output stream in create [thread=" + Thread.currentThread().getName() + "path=" +
+ path + ", overwrite=" + overwrite + ", bufSize=" + bufSize + ']');
+
+ if (mode == PROXY) {
+ FSDataOutputStream os = secondaryFs.createInternal(toSecondary(f), flag, perm, bufSize,
+ replication, blockSize, progress, checksumOpt, createParent);
+
+ if (clientLog.isLogEnabled()) {
+ long logId = IgfsLogger.nextId();
+
+ if (append)
+ clientLog.logAppend(logId, path, PROXY, bufSize); // Don't have stream ID.
+ else
+ clientLog.logCreate(logId, path, PROXY, overwrite, bufSize, replication, blockSize);
+
+ return new FSDataOutputStream(new HadoopIgfsProxyOutputStream(os, clientLog, logId));
+ }
+ else
+ return os;
+ }
+ else {
+ Map<String, String> permMap = F.asMap(PROP_PERMISSION, toString(perm),
+ PROP_PREFER_LOCAL_WRITES, Boolean.toString(preferLocFileWrites));
+
+ // Create stream and close it in the 'finally' section if any sequential operation failed.
+ HadoopIgfsStreamDelegate stream;
+
+ long logId = -1;
+
+ if (append) {
+ stream = rmtClient.append(path, create, permMap);
+
+ if (clientLog.isLogEnabled()) {
+ logId = IgfsLogger.nextId();
+
+ clientLog.logAppend(logId, path, mode, bufSize);
+ }
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opened output stream in append [path=" + path + ", delegate=" + stream + ']');
+ }
+ else {
+ stream = rmtClient.create(path, overwrite, colocateFileWrites, replication, blockSize,
+ permMap);
+
+ if (clientLog.isLogEnabled()) {
+ logId = IgfsLogger.nextId();
+
+ clientLog.logCreate(logId, path, mode, overwrite, bufSize, replication, blockSize);
+ }
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Opened output stream in create [path=" + path + ", delegate=" + stream + ']');
+ }
+
+ assert stream != null;
+
+ HadoopIgfsOutputStream igfsOut = new HadoopIgfsOutputStream(stream, LOG,
+ clientLog, logId);
+
+ bufSize = Math.max(64 * 1024, bufSize);
+
+ out = new BufferedOutputStream(igfsOut, bufSize);
+
+ FSDataOutputStream res = new FSDataOutputStream(out, null, 0);
+
+ // Mark stream created successfully.
+ out = null;
+
+ return res;
+ }
+ }
+ finally {
+ // Close if failed during stream creation.
+ if (out != null)
+ U.closeQuiet(out);
+
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean supportsSymlinks() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void renameInternal(Path src, Path dst) throws IOException {
+ A.notNull(src, "src");
+ A.notNull(dst, "dst");
+
+ enterBusy();
+
+ try {
+ IgfsPath srcPath = convert(src);
+ IgfsPath dstPath = convert(dst);
+ Set<IgfsMode> childrenModes = modeRslvr.resolveChildrenModes(srcPath);
+
+ if (childrenModes.contains(PROXY)) {
+ if (clientLog.isLogEnabled())
+ clientLog.logRename(srcPath, PROXY, dstPath);
+
+ secondaryFs.renameInternal(toSecondary(src), toSecondary(dst));
+ }
+
+ rmtClient.rename(srcPath, dstPath);
+
+ if (clientLog.isLogEnabled())
+ clientLog.logRename(srcPath, modeRslvr.resolveMode(srcPath), dstPath);
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean delete(Path f, boolean recursive) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = modeRslvr.resolveMode(path);
+ Set<IgfsMode> childrenModes = modeRslvr.resolveChildrenModes(path);
+
+ if (childrenModes.contains(PROXY)) {
+ if (clientLog.isLogEnabled())
+ clientLog.logDelete(path, PROXY, recursive);
+
+ return secondaryFs.delete(toSecondary(f), recursive);
+ }
+
+ boolean res = rmtClient.delete(path, recursive);
+
+ if (clientLog.isLogEnabled())
+ clientLog.logDelete(path, mode, recursive);
+
+ return res;
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void setVerifyChecksum(boolean verifyChecksum) throws IOException {
+ // Checksum has effect for secondary FS only.
+ if (secondaryFs != null)
+ secondaryFs.setVerifyChecksum(verifyChecksum);
+ }
+
+ /** {@inheritDoc} */
+ @Override public FileChecksum getFileChecksum(Path f) throws IOException {
+ if (mode(f) == PROXY)
+ return secondaryFs.getFileChecksum(f);
+
+ return null;
+ }
+
+ /** {@inheritDoc} */
+ @Override public FileStatus[] listStatus(Path f) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = modeRslvr.resolveMode(path);
+
+ if (mode == PROXY) {
+ FileStatus[] arr = secondaryFs.listStatus(toSecondary(f));
+
+ if (arr == null)
+ throw new FileNotFoundException("File " + f + " does not exist.");
+
+ for (int i = 0; i < arr.length; i++)
+ arr[i] = toPrimary(arr[i]);
+
+ if (clientLog.isLogEnabled()) {
+ String[] fileArr = new String[arr.length];
+
+ for (int i = 0; i < arr.length; i++)
+ fileArr[i] = arr[i].getPath().toString();
+
+ clientLog.logListDirectory(path, PROXY, fileArr);
+ }
+
+ return arr;
+ }
+ else {
+ Collection<IgfsFile> list = rmtClient.listFiles(path);
+
+ if (list == null)
+ throw new FileNotFoundException("File " + f + " does not exist.");
+
+ List<IgfsFile> files = new ArrayList<>(list);
+
+ FileStatus[] arr = new FileStatus[files.size()];
+
+ for (int i = 0; i < arr.length; i++)
+ arr[i] = convert(files.get(i));
+
+ if (clientLog.isLogEnabled()) {
+ String[] fileArr = new String[arr.length];
+
+ for (int i = 0; i < arr.length; i++)
+ fileArr[i] = arr[i].getPath().toString();
+
+ clientLog.logListDirectory(path, mode, fileArr);
+ }
+
+ return arr;
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void mkdir(Path f, FsPermission perm, boolean createParent) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ IgfsPath path = convert(f);
+ IgfsMode mode = modeRslvr.resolveMode(path);
+
+ if (mode == PROXY) {
+ if (clientLog.isLogEnabled())
+ clientLog.logMakeDirectory(path, PROXY);
+
+ secondaryFs.mkdir(toSecondary(f), perm, createParent);
+ }
+ else {
+ rmtClient.mkdirs(path, permission(perm));
+
+ if (clientLog.isLogEnabled())
+ clientLog.logMakeDirectory(path, mode);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public FileStatus getFileStatus(Path f) throws IOException {
+ A.notNull(f, "f");
+
+ enterBusy();
+
+ try {
+ if (mode(f) == PROXY)
+ return toPrimary(secondaryFs.getFileStatus(toSecondary(f)));
+ else {
+ IgfsFile info = rmtClient.info(convert(f));
+
+ if (info == null)
+ throw new FileNotFoundException("File not found: " + f);
+
+ return convert(info);
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public BlockLocation[] getFileBlockLocations(Path path, long start, long len) throws IOException {
+ A.notNull(path, "path");
+
+ IgfsPath igfsPath = convert(path);
+
+ enterBusy();
+
+ try {
+ if (modeRslvr.resolveMode(igfsPath) == PROXY)
+ return secondaryFs.getFileBlockLocations(path, start, len);
+ else {
+ long now = System.currentTimeMillis();
+
+ List<IgfsBlockLocation> affinity = new ArrayList<>(
+ rmtClient.affinity(igfsPath, start, len));
+
+ BlockLocation[] arr = new BlockLocation[affinity.size()];
+
+ for (int i = 0; i < arr.length; i++)
+ arr[i] = convert(affinity.get(i));
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Fetched file locations [path=" + path + ", fetchTime=" +
+ (System.currentTimeMillis() - now) + ", locations=" + Arrays.asList(arr) + ']');
+
+ return arr;
+ }
+ }
+ finally {
+ leaveBusy();
+ }
+ }
+
+ /**
+ * Resolve path mode.
+ *
+ * @param path HDFS path.
+ * @return Path mode.
+ */
+ public IgfsMode mode(Path path) {
+ return modeRslvr.resolveMode(convert(path));
+ }
+
+ /**
+ * Convert the given path to path acceptable by the primary file system.
+ *
+ * @param path Path.
+ * @return Primary file system path.
+ */
+ private Path toPrimary(Path path) {
+ return convertPath(path, getUri());
+ }
+
+ /**
+ * Convert the given path to path acceptable by the secondary file system.
+ *
+ * @param path Path.
+ * @return Secondary file system path.
+ */
+ private Path toSecondary(Path path) {
+ assert secondaryFs != null;
+ assert secondaryUri != null;
+
+ return convertPath(path, secondaryUri);
+ }
+
+ /**
+ * Convert path using the given new URI.
+ *
+ * @param path Old path.
+ * @param newUri New URI.
+ * @return New path.
+ */
+ private Path convertPath(Path path, URI newUri) {
+ assert newUri != null;
+
+ if (path != null) {
+ URI pathUri = path.toUri();
+
+ try {
+ return new Path(new URI(pathUri.getScheme() != null ? newUri.getScheme() : null,
+ pathUri.getAuthority() != null ? newUri.getAuthority() : null, pathUri.getPath(), null, null));
+ }
+ catch (URISyntaxException e) {
+ throw new IgniteException("Failed to construct secondary file system path from the primary file " +
+ "system path: " + path, e);
+ }
+ }
+ else
+ return null;
+ }
+
+ /**
+ * Convert a file status obtained from the secondary file system to a status of the primary file system.
+ *
+ * @param status Secondary file system status.
+ * @return Primary file system status.
+ */
+ private FileStatus toPrimary(FileStatus status) {
+ return status != null ? new FileStatus(status.getLen(), status.isDirectory(), status.getReplication(),
+ status.getBlockSize(), status.getModificationTime(), status.getAccessTime(), status.getPermission(),
+ status.getOwner(), status.getGroup(), toPrimary(status.getPath())) : null;
+ }
+
+ /**
+ * Convert IGFS path into Hadoop path.
+ *
+ * @param path IGFS path.
+ * @return Hadoop path.
+ */
+ private Path convert(IgfsPath path) {
+ return new Path(IGFS_SCHEME, uriAuthority, path.toString());
+ }
+
+ /**
+ * Convert Hadoop path into IGFS path.
+ *
+ * @param path Hadoop path.
+ * @return IGFS path.
+ */
+ @Nullable private IgfsPath convert(Path path) {
+ if (path == null)
+ return null;
+
+ return path.isAbsolute() ? new IgfsPath(path.toUri().getPath()) :
+ new IgfsPath(workingDir, path.toUri().getPath());
+ }
+
+ /**
+ * Convert IGFS affinity block location into Hadoop affinity block location.
+ *
+ * @param block IGFS affinity block location.
+ * @return Hadoop affinity block location.
+ */
+ private BlockLocation convert(IgfsBlockLocation block) {
+ Collection<String> names = block.names();
+ Collection<String> hosts = block.hosts();
+
+ return new BlockLocation(
+ names.toArray(new String[names.size()]) /* hostname:portNumber of data nodes */,
+ hosts.toArray(new String[hosts.size()]) /* hostnames of data nodes */,
+ block.start(), block.length()
+ ) {
+ @Override public String toString() {
+ try {
+ return "BlockLocation [offset=" + getOffset() + ", length=" + getLength() +
+ ", hosts=" + Arrays.asList(getHosts()) + ", names=" + Arrays.asList(getNames()) + ']';
+ }
+ catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+ };
+ }
+
+ /**
+ * Convert IGFS file information into Hadoop file status.
+ *
+ * @param file IGFS file information.
+ * @return Hadoop file status.
+ */
+ private FileStatus convert(IgfsFile file) {
+ return new FileStatus(
+ file.length(),
+ file.isDirectory(),
+ dfltReplication,
+ file.groupBlockSize(),
+ file.modificationTime(),
+ file.accessTime(),
+ permission(file),
+ file.property(PROP_USER_NAME, DFLT_USER_NAME),
+ file.property(PROP_GROUP_NAME, "users"),
+ convert(file.path())) {
+ @Override public String toString() {
+ return "FileStatus [path=" + getPath() + ", isDir=" + isDirectory() + ", len=" + getLen() + "]";
+ }
+ };
+ }
+
+ /**
+ * Convert Hadoop permission into IGFS file attribute.
+ *
+ * @param perm Hadoop permission.
+ * @return IGFS attributes.
+ */
+ private Map<String, String> permission(FsPermission perm) {
+ if (perm == null)
+ perm = FsPermission.getDefault();
+
+ return F.asMap(PROP_PERMISSION, toString(perm));
+ }
+
+ /**
+ * @param perm Permission.
+ * @return String.
+ */
+ private static String toString(FsPermission perm) {
+ return String.format("%04o", perm.toShort());
+ }
+
+ /**
+ * Convert IGFS file attributes into Hadoop permission.
+ *
+ * @param file File info.
+ * @return Hadoop permission.
+ */
+ private FsPermission permission(IgfsFile file) {
+ String perm = file.property(PROP_PERMISSION, null);
+
+ if (perm == null)
+ return FsPermission.getDefault();
+
+ try {
+ return new FsPermission((short)Integer.parseInt(perm, 8));
+ }
+ catch (NumberFormatException ignore) {
+ return FsPermission.getDefault();
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public String toString() {
+ return S.toString(IgniteHadoopFileSystem.class, this);
+ }
+}
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/6423cf02/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/package.html
----------------------------------------------------------------------
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/package.html b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/package.html
new file mode 100644
index 0000000..8adac96
--- /dev/null
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/fs/v2/package.html
@@ -0,0 +1,24 @@
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You under the Apache License, Version 2.0
+ (the "License"); you may not use this file except in compliance with
+ the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<body>
+ <!-- Package description. -->
+ Contains Ignite Hadoop 2.x <code>FileSystem</code> implementation.
+</body>
+</html>
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/6423cf02/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java
----------------------------------------------------------------------
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java
new file mode 100644
index 0000000..83053ce
--- /dev/null
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java
@@ -0,0 +1,138 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.hadoop.mapreduce;
+
+import org.apache.hadoop.conf.*;
+import org.apache.hadoop.mapreduce.*;
+import org.apache.hadoop.mapreduce.protocol.*;
+import org.apache.ignite.*;
+import org.apache.ignite.internal.*;
+import org.apache.ignite.internal.client.*;
+import org.apache.ignite.internal.client.marshaller.optimized.*;
+import org.apache.ignite.internal.processors.hadoop.proto.*;
+import org.apache.ignite.internal.util.future.*;
+import org.apache.ignite.internal.util.typedef.*;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import java.util.concurrent.*;
+
+import static org.apache.ignite.internal.client.GridClientProtocol.*;
+import static org.apache.ignite.internal.processors.hadoop.proto.HadoopClientProtocol.*;
+
+
+/**
+ * Ignite Hadoop client protocol provider.
+ */
+public class IgniteHadoopClientProtocolProvider extends ClientProtocolProvider {
+ /** Clients. */
+ private static final ConcurrentHashMap<String, IgniteInternalFuture<GridClient>> cliMap = new ConcurrentHashMap<>();
+
+ /** {@inheritDoc} */
+ @Override public ClientProtocol create(Configuration conf) throws IOException {
+ if (FRAMEWORK_NAME.equals(conf.get(MRConfig.FRAMEWORK_NAME))) {
+ String addr = conf.get(MRConfig.MASTER_ADDRESS);
+
+ if (F.isEmpty(addr))
+ throw new IOException("Failed to create client protocol because server address is not specified (is " +
+ MRConfig.MASTER_ADDRESS + " property set?).");
+
+ if (F.eq(addr, "local"))
+ throw new IOException("Local execution mode is not supported, please point " +
+ MRConfig.MASTER_ADDRESS + " to real Ignite node.");
+
+ return createProtocol(addr, conf);
+ }
+
+ return null;
+ }
+
+ /** {@inheritDoc} */
+ @Override public ClientProtocol create(InetSocketAddress addr, Configuration conf) throws IOException {
+ if (FRAMEWORK_NAME.equals(conf.get(MRConfig.FRAMEWORK_NAME)))
+ return createProtocol(addr.getHostString() + ":" + addr.getPort(), conf);
+
+ return null;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void close(ClientProtocol cliProto) throws IOException {
+ // No-op.
+ }
+
+ /**
+ * Internal protocol creation routine.
+ *
+ * @param addr Address.
+ * @param conf Configuration.
+ * @return Client protocol.
+ * @throws IOException If failed.
+ */
+ private static ClientProtocol createProtocol(String addr, Configuration conf) throws IOException {
+ return new HadoopClientProtocol(conf, client(addr));
+ }
+
+ /**
+ * Create client.
+ *
+ * @param addr Endpoint address.
+ * @return Client.
+ * @throws IOException If failed.
+ */
+ private static GridClient client(String addr) throws IOException {
+ try {
+ IgniteInternalFuture<GridClient> fut = cliMap.get(addr);
+
+ if (fut == null) {
+ GridFutureAdapter<GridClient> fut0 = new GridFutureAdapter<>();
+
+ IgniteInternalFuture<GridClient> oldFut = cliMap.putIfAbsent(addr, fut0);
+
+ if (oldFut != null)
+ return oldFut.get();
+ else {
+ GridClientConfiguration cliCfg = new GridClientConfiguration();
+
+ cliCfg.setProtocol(TCP);
+ cliCfg.setServers(Collections.singletonList(addr));
+ cliCfg.setMarshaller(new GridClientOptimizedMarshaller());
+ cliCfg.setDaemon(true);
+
+ try {
+ GridClient cli = GridClientFactory.start(cliCfg);
+
+ fut0.onDone(cli);
+
+ return cli;
+ }
+ catch (GridClientException e) {
+ fut0.onDone(e);
+
+ throw new IOException("Failed to establish connection with Ignite node: " + addr, e);
+ }
+ }
+ }
+ else
+ return fut.get();
+ }
+ catch (IgniteCheckedException e) {
+ throw new IOException("Failed to establish connection with Ignite node: " + addr, e);
+ }
+ }
+}